<template>
  <div>
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>商品管理</el-breadcrumb-item>
      <el-breadcrumb-item>添加商品</el-breadcrumb-item>
    </el-breadcrumb>
    <el-card>
      <!-- 提示区 -->
      <el-alert
        title="添加商品信息"
        :closable="false"
        type="info"
        center
        show-icon
      >
      </el-alert>

      <el-steps
        align-center
        :space="200"
        :active="active - 0"
        finish-status="success"
      >
        <el-step title="基本信息"></el-step>
        <el-step title="商品参数"></el-step>
        <el-step title="商品属性"></el-step>
        <el-step title="商品图片"></el-step>
        <el-step title="商品内容"></el-step>
        <el-step title="完成"></el-step>
      </el-steps>

      <el-form
        :model="addForm"
        :rules="addRules"
        ref="addRef"
        label-width="100px"
        class="demo-ruleForm"
        label-position="top"
      >
        <el-tabs
          v-model="active"
          :before-leave="beforeLeaveTab"
          :tab-position="'left'"
          @tab-click="tabClick"
        >
          <el-tab-pane label="基本信息" name="0">
            <el-form-item label="商品名称" prop="goods_name">
              <el-input v-model="addForm.goods_name"></el-input>
            </el-form-item>
            <el-form-item label="商品价格" prop="goods_price">
              <el-input v-model="addForm.goods_price" ></el-input>
            </el-form-item>
            <el-form-item label="商品重量" prop="goods_weight">
              <el-input v-model="addForm.goods_weight" ></el-input>
            </el-form-item>
            <el-form-item label="商品数量" prop="goods_number">
              <el-input v-model="addForm.goods_number"></el-input>
            </el-form-item>
            <el-form-item label="商品分类" prop="goods_cat">
              <el-cascader
                expand-trigger="hover"
                v-model="addForm.goods_cat"
                :options="cateList"
                :props="cascaderProps"
                @change="parentCateChange"
              >
              </el-cascader>
            </el-form-item>
          </el-tab-pane>
          <el-tab-pane label="商品参数" name="1">
            <el-form-item
              v-for="item in manyData"
              :key="item.attr_id"
              :label="item.attr_name"
              prop="goods_cat"
            >
              <el-checkbox-group v-model="item.attr_vals">
                <el-checkbox
                  v-for="(cb, i) in item.attr_vals"
                  :label="cb"
                  :key="i"
                  border
                ></el-checkbox>
              </el-checkbox-group>
            </el-form-item>
          </el-tab-pane>
          <el-tab-pane label="商品属性" name="2">
            <el-form-item
              :label="item.attr_name"
              v-for="item in onlyData"
              :key="item.attr_id"
            >
              <el-input type="text" v-model="item.attr_vals"></el-input>
            </el-form-item>
          </el-tab-pane>
          <el-tab-pane label="商品图片" name="3">
            <!-- action  图片后台地址 -->
            <el-upload
              class="upload-demo"
              action="http://127.0.0.1:8888/api/private/v1/upload"
              :on-preview="handlePreview"
              :on-success="uploadSuccess"
              :on-remove="handleRemove"
              list-type="picture"
              :headers="headersObj"
            >
              <el-button size="small" type="primary">点击上传</el-button>
              <div slot="tip" class="el-upload__tip">
                只能上传jpg/png文件，且不超过500kb
              </div>
            </el-upload>
          </el-tab-pane>
          <el-tab-pane label="商品内容" name="4">
            <quill-editor v-model="addForm.goods_introduce"></quill-editor>
            <el-button @click="add" class="save" type="primary"
              >保存商品</el-button
            >
          </el-tab-pane>
        </el-tabs>
      </el-form>
    </el-card>

    <!-- 预览图片 -->
    <el-dialog
      title="预览图片"
      :visible.sync="preDialogVisible"
      @closed="preClose"
      width="50%"
    >
      <img :src="previewPath" alt="" class="imgPre" />
    </el-dialog>
  </div>
</template>

<script>
export default {
  data() {
    return {
      active: "0",
      cateList: [],
      cascaderProps: {
        value: "cat_id",
        label: "cat_name",
        children: "children",
      },
      addForm: {
        goods_name: "",
        goods_cat: [],
        goods_price: 0,
        goods_number: 0,
        goods_weight: 0,
        goods_introduce: "",
        pics: [],
        attrs: [],
      },
      preDialogVisible: false,
      previewPath: "",
      headersObj: {
        Authorization: window.sessionStorage.getItem("token"),
      },
      addRules: {
        goods_name: [
          {
            required: true,
            message: "请输入商品名称",
            trigger: "blur",
          },
        ],
        goods_price: [
          {
            type: Number,
            required: true,
            message: "请输入商品价格",
            trigger: "blur",
          },
        ],
        goods_weight: [
          {
            type:Number,
            required: true,
            message: "请输入商品重量",
            trigger: "blur",
          },
        ],
        goods_number: [
          {
            required: true,
            type:Number,
            message: "请输入商品数量",
            trigger: "blur",
          },
          {
            
          }
        ],
        goods_cat: [
          {
            required: true,
            message: "请选择商品分类",
            trigger: "blur",
          },
        ],
      },
      sel: "many",
      manyData: [],
      onlyData: [],
    }
  },
  computed: {
    cateId() {
      if (this.addForm.goods_cat.length === 3) {
        return this.addForm.goods_cat[2]
      }
      return null
    },
  },
  created() {
    this.getCateList()
  },
  methods: {
    async getCateList() {
      const { data: res } = await this.$http.get("categories")

      if (res.meta.status !== 200) return this.$message.error("获取列表失败")
      this.cateList = res.data
    },
    parentCateChange(r) {
      console.log(this.addForm.goods_cat)
      if (this.addForm.goods_cat.length !== 3) {
        this.addForm.goods_cat = []
        return this.$message.error("请选择三级分类")
      }
    },
    beforeLeaveTab(activeName, oldActiveName) {
      if (oldActiveName === "0" && this.addForm.goods_cat.length !== 3) {
        this.$message.error("请先选择分类")
        return false
      }
      // this.$refs.addRef.validate(async value =>{})
    },
    async getCates() {
      var sel = this.sel
      const { data: res } = await this.$http.get(
        `categories/${this.cateId}/attributes`,
        { params: { sel } }
      )
      if (res.meta.status !== 200) return this.$message.error("获取列表失败")
      console.log(res.data)
      res.data.forEach((item) => {
        item.attr_vals =
          item.attr_vals.length > 0 ? item.attr_vals.split(" ") : []
      })
      if (sel === "many") {
        this.manyData = res.data
      } else {
        this.onlyData = res.data
      }
      console.log(this.manyData)
    },
    tabClick() {
      if (this.active === "1") {
        this.getCates()
      } else if (this.active === "2") {
        this.sel = "only"
        this.getCates()
      }
    },
    uploadSuccess(file) {
      let pics = {
        pic: file.data.tmp_path,
      }
      this.addForm.pics.push(pics)
    },
    handlePreview(file) {
      this.previewPath = file.response.data.url
      this.preDialogVisible = true
    },
    handleRemove(file, fileList) {
      let pic = file.response.data.tmp_path
      let i = this.addForm.pics.findIndex((x) => {
        x.pics === pic
      })
      this.addForm.pics.splice(i, 1)
      console.log(this.addForm)
    },
    preClose() {
      this.preDialogVisible = false
    },
    add() {
      this.$refs.addRef.validate(async (val) => {
        if (!val) {
          return this.$message.error("请填写必要的表单项")
        }
        let addForm = this.addForm
        addForm.goods_cat = addForm.goods_cat.join(",")
        console.log(addForm)
        console.log(this.addForm)
        this.manyData.forEach((item) => {
          let many = {
            attr_id: item.attr_id,
            attr_value: item.attr_vals.join(" "),
          }
         addForm.attrs.push(many)
        })
        this.onlyData.forEach((item) => {
          let only = {
            attr_id: item.attr_id,
            attr_value: item.attr_vals.join(" "),
          }
         addForm.attrs.push(only)
        })
        const { data: res } = await this.$http.post("goods",addForm)
        console.log(res)
        if(res.meta.status!==201) return this.$message.error("添加商品失败")
        this.$message.success("添加成功")
        this.$router.push("/goods")
      })
    },
  },
}
</script>

<style>
.save {
  margin-top: 10px;
}
.el-steps {
  margin: 15px 0;
}
.el-step__title {
  font-size: 10px;
}
.el-checkbox {
  margin-left: 0px;
  margin-right: 5px;
}
.imgPre {
  width: 100%;
}
</style>